---
id: CVE-2026-108735
title: >-
  Miniflux 2.3.0 through 2.3.3 contains a server-side request forgery
  vulnerability that allows authenticated users to reach internal addresses by
  setting a feed's proxy_url
summary: >-
  Miniflux 2.3.0 through 2.3.3 contains a server-side request forgery
  vulnerability that allows authenticated users to reach internal addresses by
  setting a feed's proxy_url. Attackers can point proxy_url at loopback or
  internal hosts, byp…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-918
published: '2026-10-11'
updated: '2026-10-11'
sourceUpdated: '2026-10-11T13:17:17.767'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108735'
references:
  - url: 'https://github.com/miniflux/v2'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/miniflux/v2/blob/c4d54f87a81b30aa173fddf05d7ff83ae7da5796/internal/reader/fetcher/request_builder.go#L155-L220
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/miniflux/v2/blob/c4d54f87a81b30aa173fddf05d7ff83ae7da5796/internal/urllib/url.go#L64-L72
    label: disclosure@vulncheck.com
  - url: 'https://hackmd.io/@haind03/miniflux-feed-proxy-url-private-network-bypass'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/miniflux-2.3.0-through-2.3.3-ssrf-via-per-feed-proxy-url
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-11T13:51:17.033Z'
---

## Overview

Miniflux 2.3.0 through 2.3.3 contains a server-side request forgery vulnerability that allows authenticated users to reach internal addresses by setting a feed's proxy_url. Attackers can point proxy_url at loopback or internal hosts, bypassing FETCHER_ALLOW_PRIVATE_NETWORKS checks to probe internal ports and send proxy-style requests to internal services.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.